| EPSRC Reference: |
GR/M53622/01 |
| Title: |
GIANT KERR NONLINEARITIES AND SINGLE-PHOTON CAVITY CONTROL IN LASER-COOLED RUBIDIUM |
| Principal Investigator: |
Durrant, Dr A |
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| Department: |
Physical Sciences |
| Organisation: |
Open University |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
04 January 1999 |
Ends: |
03 January 2002 |
Value (£): |
133,816
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| EPSRC Research Topic Classifications: |
| Atoms & Ions |
Optical Phenomena |
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| EPSRC Industrial Sector Classifications: |
| No relevance to Underpinning Sectors |
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Summary on Grant Application Form |
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This proposal is for an experimental and theoretical investigation of atomic coherence effects produced when two or more laser beams irradiate an atom, and to demonstrate how these effects can be used to enable a single photon to control the transmission of an optical cavity. The proposal exploits and combines two physical mechanisms:i) the loss-free transmission and exceptionally large dispersion of a resonant probe beam in the presence of another coherent beam (electromagnetically induced transparency), and ii) the control of the phase of a probe laser by the intensity of a 'signal' beam, i.e. the Kerr effect. The experimental work will be carried out in a rubidium magneto-optical trap thereby taking advantage of the Doppler-free properties of laser-cooled atoms. The very large signal-induced phase shifts (i.e. giant Kerr non-linearities) will be of interest in experimental tests of quantum measurement theory where it is useful to be able to deduce the intensity in experimental tests of measurements of the phase of a 'meter' beam, i.e. quantum non-demolition measurements. Single-photon cavity control could have applications to the development of optical logical gates for quantum computing and cryptology.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.open.ac.uk |